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In Python, a dictionary is a collection of key-value pairs, where each key is unique and is used to access its corresponding value. Keys in a dictionary are crucial because they are the means by which we retrieve values. Understanding how to work with dictionary keys is fundamental to effectively using dictionaries in Python.
Accessing and Using Dictionary Keys
To access the keys of a dictionary, you can use the .keys() method, which returns a view object containing the keys of the dictionary. This view object reflects any changes made to the dictionary, meaning if you add or remove items from the dictionary, the view will update to reflect these changes123.
Here's a simple example of how to use the .keys() method:
# Define a dictionarycar = {"brand": "Ford","model": "Mustang","year": 1964}# Access the keyskeys_view = car.keys()# Print the keysprint(keys_view) # Output: dict_keys(['brand', 'model', 'year']) python - How to print a dictionary's key? - Stack Overflow
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WEBMay 5, 2023 · Printing a dictionary keys and values in Python is an easy task that you can do in two ways. You can use the items() method and a for loop, or you can just use the for loop as shown in this tutorial.
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